Fraud-preventing device for vending machines



March 1 1927.

1,619,655 D. L. CHANDLER FRAUDPREVENTING DEVICE FOR VENDING MACHINES Original Filed March 2 9 A IIIIIIIIIIIIIIIIIIIIIIIIII Patented Mar. 1, 1927.

UNITED STATES 1,619,655 P TENT OFFICE.

DANIEL L. CHANDLER, or BOSTON, MAS ACHUSETTS, AssIenoR To vEND ADS C0,, INC. or WORCESTER, MASSACHUSETTS; A CORPORATION or MASSAC USETTS.

FRAUD-PREVENTING DEVICE FOR VENDING MACHINES.

Original application filed March 28,1923, SerialNo. 628,354. Divided and this application filed 16; 1925. Serial No. 15,989.

The present invention relates to vending machines, of the kind which, when a correct coin is .deposited in the machine, will deliver an article of merchandise in exchange therefor.

The primary object of the invention is to provide in such a machine means by which a coin may be deposited therein, together with means for preventing the withdrawal of such coin after the machine begins to operate.

A further object of the invention isto provide, in a vending machine of the class described, means for preventing the operation of the machine by depositing a correct coin therein and the subsequent withdrawal of such coin by a string, wire or other means once the machine has begun to operate.

This .application is a division of my application for vending machine filed March 28, 1923, Serial No. 628,354.

Other objects and advantages of the invention will in part be apparent and in part appear from the following detailed description taken in connection with the accompanying drawings, which illustrate a preferred embodiment of the invention and in which Fig. 1 is a perspective view of a coin-receiving housing adapted to be mounted on any; preferred form of vending machine;

Fig. 2 is a vertical. sectional view through the housing shown. in Fig.v l and showing. the parts contained in said housing in their initial or starting position;

Fig. 3. is a Vertical sectional view similar to F ig. 2 and showing the same parts in the position they occupy when the machine is started in operation.

Referring in detail to said drawings, the housing 11 preferably consists of a vertical housing 12 having therein a vertical slot 13, and the housing 14 having therein a curved Slot 15, said housings preferably being joined or formed in one piece and provided with laterally extending or other flanges 16. for convenient attachment to the main body of any preferred form of vending machine.

it. preferred form of vending machine with which the present invention is particularly designed to cooperate is the machine shown and described in the above-mentioned application, Serial No. 628,354. I

So much of the construction of said preferred'form of vendlng machine as is nec- March essary to a full disclosure of the present invcntion and its mode of operation will now be described.

The preferred form of vending machine with which the present .invention is used is porvided with. any preferred form of coinreceiving member, herein illustrated as having the form of a rotary plate member 17 fast to a rotatable shaft or pin 18, which may be mounted in suitable bearings and provided with a suitable handle by which it may be rotated, not shown, The rotary. coin-receiving member 17 is provided at its upper end with a notched portion 19 adapted to receive a coin 20. In the form shown, the notched coin-receiving portion of the plate 17 is located above and to one side of the shaft or pin 18, upon which the rotary member 17 is mounted.

The coin receiving member 17 is provided with an eccentric cam slot-21 adapted to receive a pin 22, which is fast' to a slide 23 located parallel to and in sliding contact with the coin-receiving member 17 on one side thereof. On the other side of the coinreceiving member 17 may be located a Second slide similar to the first and connectefi thereto by the pin, 22, or other means may be located on the other side of the coin-receiving member for the purpose of preventing the coin from falling out of the notched portion 19 in the coin-receiving member. 1

In the preferred form,'when the coin lies in the notch 19, ityis located between two plates, one of which'is shown at 23. It will be seen that by means of the cam slot 21 and the pin 22, when the shaft 18 is rotated, it will carry with it the rotatable coin-receiv ing member 17 and that the coin-receiving member 17, by rotating in a clockwise direction as shown in the drawings, will cause alateral sliding movement of the slide 23, which is connected thereto by the pin 22 in the slot 21, as illustrated in Figs. 2 and 3 of the drawings.

The movable slide 23 may be used to op erate the coin-withdrawal preventing means which comprises more particularly the present invention.

As shown in the drawin s this than be b a width as said slot, whereas the curved plate 26 lies below and to one side of the slot 15 to permit a coin to pass across the side of said plate and into the coin-receiving notch 19.

A coin-abutting and guiding flange or plate 30 is formed or secured horizontally at one end of the upper edge of the curved plate 26, and when a coin is deposited in the machine, it passes downwardly through the slots 13 and 15 and across the face of the,

curved plate 26 between the guide plate 30 and the edge 29 on the pendulum member, coming to a stop in the coin-receiving notch 19. 1

When the parts are in the positions shown in Fig. 2, it will "be seen that by the above means there is provided a free passage for the coin from the outside of the housing to the notch 19. i

In order to prevent the withdrawal of the coin after ithas been deposited in the machine and themachine has begun its operation, a cam member 31 having a curved upper edge 32 is pivoted at 33 to the curved plate 26. A similar cam is mounted on the pin 33 on the other side of the curved plate 26 and is provided at one of its ends with a fixed pin 34 projecting therefrom and en-' gaged by one end of a spring 35 secured at 36 to the curved late 26, the normal tendency of said spring being to urge downwardly the pin 34 and thus raise the other ends of the cams 31.

A stationary cam 39 is fixed in the housing 11 and is provided with a curved face i 40 opposite the cam 31 carrying the pin 34,

as shown in Fig. 3. When the parts are moved to their normal coin-receiving positions, the curved plate 26 is moved toward the left, looking at Fig. 3, to the position shown in Fig. 2, the curved portion of one of the cams 31 coming into contact with the curved face 40 of the stationary cam guide 39, which guides the cam 31 downwardly against the action of the spring 35 until it occupies the position shown in Fig. 2.

It will be noted that in this position the cam 31 allows free passage of the coin through the coin slots down into the coin notch 19.

After the coin has been depositedin the machine and the machine has begun to operate, for the purpose of delivering an article ofmerchandisein exchange for the coin, the

shaft 18 will have begun its rotation in a clockwise direction as viewed. in the drawings, carrying with it the rotary coin-receiving plate 17, which moves from the position shown in Fig.2 to the position shown in Fig. 3. Owing to the pin 22 fast to the slide 23 and entering the cam slot 21 in the coin receiver 17, the slide 23 will be given a longitudinal movement toward the right, i

as viewed inthe drawings, carrying with with it the tooth 25 in the slot. 24 and thus causing movement of the pendulum memher and the curved plate 26 from the position shown in Fig. 2 to the position shown in Fig. 3. As soon as the curved plate 26 begins its movement, it will carry with it the pivoted cam 31 away from the curved edge of the stationary cam 39, allowing the.

spring 35 to act downwardly on the pin 34, thus raising the pivoted cams 31 to the position shown in Fig. 3, which position the cams 31 occupy during the completion of the forward movement of the mechanism and until it is returned again to the original position shown in Fig. 2. y I

As soon as the pivoted cam leaves the stationary cam, the pivoted cam occupies the position shown in Fig. 3, and if an attempt now be made to withdraw the coin 20 which has been deposited in the machine, and it is drawn upwardly for the purpose of withdrawing it from the machine, it will encounter the edge 41 of the coin-receiving slot 19 or the bottom of the pendulum member 27, and the lower horizontal face of the pivoted cam 31, which has narrowed the coin passage sufficiently to prevent the passage therethrough of the coin in the reverse di rection, that is, out of the machine, as is shown in Fig. 3.

The plate 30, secured to the upper edge of the curved plate 26, forms an abutment at one of its ends for the pivoted cam 31, thus bringing-it to a stop in fixed position and preventing further rotary movement of said pivoted cam, due either to the action of the spring 35 or the pressure of'a coin on its lower edge pulled upwardly from the coin notch 19. When the coin 20 in the notch 19 has been carried by'the coin receiver 17 acertain distance, it passes under 7 a stationary plate 45 fixed in the housing,

which furtherprevents withdrawal of the coin.

It will be seen that by the above construction there has been provideda coin-receiving housing adapted to receive a com and conduct it to the operating parts of a vending delivered an article of merchandise in exchange for said coin, a free passage to the coin-receiving member is provided in order that the next correct coin used in the ma chine may be delivered to the coin-receiving member Withoutencountering any obstruction in its passage thereto.

What is claimed is:

1. A vending machine having, in combination, a casing provided with a coin slot through which a coin may be inserted in said casing, an arm in said slot, means to impart a swinging motion to said arm, a pivotally mounted detent positioned on said arm in alignment with said slot, a stationary cam adapted to be engaged by said detent whereby said detent will be rocked in one direction to open said slot and permit a coin to be inserted in said casing and means to rock said detent in the opposite direction to obstruct said slot so as to prevent said coin from being withdrawn from said casing.

2. In a vending machine adapted to receive a coin and deliver an article of merchandise in exchange therefor, a housing provided with a coin slot, a movable coin-receiving member a movable cam-carrying member operable thereby, a movable cam on said.

cam-carrying member, and means for moving said cam to open said slot and to close said slot.

3. In a vending machine adapted to receive a coin and deliver an article of merchandise-in exchange therefor, a housing rovided with a coin slot a movable coin P receiver, a movable cam carrier associated therewith, a movable cam on said carrier, a stationary cam guide adapted to move said cam to open said slot, and a spring adapted on forward movement of said coin receiver to move said cam to close said slot.

4;. In a vending machine adapted to re ceive a coin and deliver an article of merchandise in exchange therefor, a housing provided with a coin slot, a movable coin receiver, a movable cam carrier associated therewith, a movable cam on said carrier, a stationary cam guide adapted to move said cam to open said slot, a spring adapted on forward movement of said coin receiver to move said cam to close said slot, and a shoulder on said coin receiver adapted to cooperate with said movable cam for preventing withdrawal of said coin In testimony whereof I ailix my signature.

DANIEL L. CHANDLER. 

